VS 2008 No Data Showing In Datasets?
Oct 6, 2010
I set up SQL Server 2008 loaded VS2008 and all the ODBC drivers.All ODBC connections for DS and DGV's and using connection strings. I managed to get the connections working when I tested this on a new program.When I copy all the files from my other computer and try to view this it works with the connection string and connects to SQL server fine.But with the dgv I see nothing. Yet if I preview the datasets I get the result I am expecting
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Jul 24, 2009
I have a database and I was thinking about using either a List Box or Data Grid to show the data. Is there is another way of showing the data? Also, when the user 'double-clicks' on the data in the List Box or Data Grid then I would like the information to come up in a new form. I know how to show a new form but I don't know how to get the information from the one that has been clicked.
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Mar 1, 2010
how can i get data from mysql table and show it in listbox in visual basic 2008
mysql table
id
filename varchar 255
filetime timestamp
and it is windows application
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Jul 1, 2009
Searching for data in Access then showing output with VB 2008
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Nov 1, 2011
All I really want to do is a join. Table 1 and Table 2 both have a number that would link the two together. I want to join two fields from Table 2 onto Table 1. I need to have two datasets because there are two different connections being made.I want to push this onto a DataGridView, which only allows a single datasource. So I'm thinking I would need to make a temp table somehow, but since I'm pulling from two different datasets I don't know if that's possible.
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Feb 2, 2011
I have an MS data report in which I have dragged items from dataset. In fact my datareport has items from two datasets and this is the problem. My report comprises two parts, Header and detail and each part need different datasource.
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Nov 26, 2008
I have an Access table that contains "Customer Number".
I have an ODBC dataset (iSeries IBM Client Access, or AS/400 data) with a customer table in it. I want to link the customer numbers in the access table to the ODBC table so I can show the customer number from the access table and the customer name, city, and state from the ODBC table.
I want to display this information in a grid. I also want to be able to add records to the grid (which adds them to the access table). What is the best way to get started doing this? I am using VB2005. I could use MS Access and have it done in about 2 minutes, but I want to take the plunge and learn VB2005.
But this VB2005 and .net thing seems like they re-wrote the book on programming and I cant seem to get a grasp on it. I have tried several projects like this in hopes of learning, but ended up abandoning them in frustration.
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May 2, 2011
I have 2 tables : product (as parent) and sales (as a child).
[Code]...
product_id at the product table is pK for product table. transaction_id at the sales table is pK for sales table . product_id at the sales table as fK, which a reference to the product_id of product table All my tables are stored in the dataset. How do I get the data from these datasets can I view on the DataGridView with a different layout formats, as follows.
[Code]...
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Apr 27, 2010
I am successful in populating data to a treeview from 3 tables (Constituents, epresentations, Letters) from a sql database. The below code works fine for that
Dim constda As New SqlDataAdapter("SELECT * FROM Constituents", conn)
Dim repsda As New SqlDataAdapter("SELECT * FROM Representations", conn)
Dim lettsda As New SqlDataAdapter("SELECT * FROM Letters", conn)
[code].....
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Jun 22, 2012
I used to build data layer by using Classes, however someone suggest to use Strongly Typed DataSets because it's faster in development. The data layer that I'm going to build should support multi DBMS(Oracle,MSSQL, MySQL..)
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Aug 17, 2009
I used to build data layer by using Classes, however someone suggest to use Strongly Typed DataSets because it's faster in development. The data layer that I'm going to build should support multi DBMS(Oracle,MSSQL, MySQL..).
how is better build it by using Strongly Typed DataSets or by using Classes?
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Sep 4, 2009
I need to very quickly write an exe system on a laptop where when the laptops are connected to the network they read a database table and store the data locally, so staff can use the laptop while they roam.The laptops have quite small capacity and the company would prefer not to use SQL Express or Access.
My question is, can the data initially be downloaded into the exe application via a dataadapter and dataset, and will that dataset the retain the downloaded data, or will I need to ensure the dataset is written to an XML file and then loaded/unloaded each time the laptop application is started while the staff are travelling ?
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May 23, 2010
I am novice at best with VB. I have a dataset built from a complex query. Well I have a lot more items in the dataset than I wish to show in a datagridview. Some items will be used for other purposes at the time, filling txt boxes, dropdowns, etc...all independent of the dgv. I am lost at how to fill just a 3 or 4 of the items rather than just filling the entire thing. So, instead of just filling the entire ds into the grid, how would I fill in selected columns into the datagrid that has specifically named columns at runtime?
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Mar 22, 2010
I have added a column to a table in SQL Server Express - the table is already included in my VB Express Dataset. However on clicking "Refresh" on the table in Database Exlorer I do not see the new column in the Database Explorer listings. I have looked around a bit for a solution to this but cannot find anything under Google.
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Mar 3, 2011
I'm not sure if this belongs in the database section or the NET section. I will leave that up to the moderators. I have converted a few of my VB6 systems to NET. However, I have retained the ADO coding technique. I probably need to update that. Below is a sample from one of my applications. As you can see, I retrieve the data and, based on conditions, I then issue an UPDATE command. From what I have been reading (and not really grasping) a DATASET/DATA ADAPTER combination will do the same thing. If so, could somebody rewrite this small block of code using "proper" ADO.NET techniques. If I see my own code rewritten it will be much more meaningful to me.
Dim cnxn As New SqlClient.SqlConnection(cnxnstring)
cnxn.Open()
Dim sql As New SqlClient.SqlCommand
sql.CommandText = "SELECT * FROM PART WHERE LTRIM(RTRIM([PARTNUMBER])) = " & "'" & Trim
[CODE]...
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Apr 5, 2009
Whilst playing around with DataGridViews in VS I've accumalated quite a few TestDataSets within my project.
Can someone please tell me the correct way of removing these cleanly? At the moment I've been Right Clicking a DataSet (from within Solution Explorer) and either clicking 'Delete' or 'Exclude From Project'
Doing this throws up Errors in the Error list such as;
TestDataSet is not defined
TestDataSetTableAdapters is not defined
TestDataSet is not defined
TestDatasetTableAdapters is not defined
I then double click each error in turn which takes me to the actual code with the error and delete this.
I have quite a lot of TestDataSets and I'm hoping there is another way to do this much cleaner.
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Mar 24, 2009
I�m fetching data from an access db, filtered by date and an ID. The data is then charted on a form (form1).
I want to be able to "duplicate" the form so that the data that is shown on form1 is shown on a different form. That forms data is not supposed to change when I change the data on the first form.
So far I�ve put som code in a contextmenustrip that opens another form1, but the chart is not showing on that form at all.
I'm thinking that I'm going about this the wrong way so I thought I'd ask you guys what you think I should do?
A little info: When Form1 opens up, it loops through selected dates in a listbox, querying each date. This takes a little time, so I decided to put the data in a dataset on form_load, and then do the drawing from the dataset on form_paint, thus not having to query the database each time the form needs repainting. why the second (or third, fourth etc) form1 doesn�t display the chart?
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May 13, 2010
I have an application that uses an access database to fill datasets. My problem is that I have three related tables, when I add a new users to the customers table The parts table fills with data saved in the database with a cust_id of -1.
I discovered that this is caused by adding a part, not saving it and deleting the customer. I Can add code to stop the user from deleting a customer that has parts but I do not have access to the live database to delete the record that are incorrect.
Is there something I can do to delete the rows that have an id of -1 on the load statment?
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May 10, 2010
I have 5 combo boxes that need to show the same list of items that come from a single dataset table. I have managed to bind the datatable to the combo boxes no problem at all.. but when I run the application and select an item from one of the combo boxes all the others change to the item I selected. After some research I believe that this problem is something to do with using the one datasource so I have tried assigning the dataset datatable to 2 different variables and used them as datasources for 2 of the comboboxes but the same still happens.
A work around to this I can see is to call the same methods and SQL select statements 5 times over to get individual datasources for each combo box but this doing that sounds crazy to me. how I can get around this easily? Code snippet below shows 2 combox boxes and their datasources. I'm using VS2005, .Net 2
ComboBox1.DropDownStyle = ComboBoxStyle.DropDownList
ComboBox1.DataSource = AllergyListDataSet.Tables("ListOfAllergies")
ComboBox1.DisplayMember = "Condition"
[Code]....
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Sep 8, 2011
i was wondering if there are other ways of showing data coming from the database.currently [ as per in my previous thread] i am using a [bind] datagridview.e.gthe table has
id, name, quantity
im thinking that listbox could be one, but it just shows 1 [e.g name].
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Nov 20, 2010
I am using VB 2008 & Access 2007 for windows forms application having typed datasets while creating connection to DB vb asks to store connection string so i did it now that i want to know where is the actual path of file where these connection strings are stored. b'cas after runnig a macro in Access Database i lost all these connections from Data Source Configuration Wizard Combo Box & also i am anable to create a new connection to Databases.I have tried to reinstall the entire Visual Studio couple of times .
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Jun 5, 2011
I m using visual studio 2010, I am trying to show the week days in Combo box but its not showing when i run it.
Class MainWindow
Private Sub ComboBox1_SelectionChanged(sender As System.Object, e As System.Windows.Controls.SelectionChangedEventArgs) Handles
[Code]....
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Sep 23, 2011
My gridview is showing more than one ProductName column and the ProductID column as well.All I want it to show is the Product Name clickable column.
<asp:Content ID="Content2" ContentPlaceHolderID="body" Runat="Server">
<br /><br /><br />
<asp:linkbutton id="btnAll" runat="server" text="ALL" onclick="btnAll_Click" />
[code].....
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Jul 18, 2012
im having a problem on my sql command. here is my command
select ProductCode, ProductName, qtyinstock, critical
from product where qtyinstock <= critical
[code].....
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Feb 1, 2011
i can't get the data to be shown in the datagridview what am i doing wrong here? i think the problem starts in the ---- if then statement
[Code].....
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May 22, 2012
I have looked around quite a bit, and nothing seems to answer my question in particular. I have DataGridView in which I add rows and columns dependent on a certain record count of geospatial data that is held in ArcGIS. The data is then passed through to the gridview for editing. So I do not use any databinding methods, rather it is a very manual process. I store data into a two-dimensional arrays, which indexes are based off of those certain data record counts. After the loops are complete, the data should be stored in each cell dependent on index. The very last row that was populated is populated perfectly, yet the other 72 (or so) rows are blank. Here is the code as follows:
[Code]...
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Apr 18, 2011
I'm working on a ASP.NET website project using VB.NET as backend code. I was looking for a way to show the header/footer of a gridview even if no data is present. I'd like to use this solution as it looks pretty clean (although it's written in C#): link I have converted the code using an online tool, resulting in: [URL] This however shows an error on line 77: "Events cannot be declared with a delegate type that has a return type"
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Oct 20, 2009
I am a newbie to .net and am using vb.net 2005 and ms access. I've made a crystal report but the prob is the report displayed has only the headings and no data... and this happens when I add more than 1 table, single table report works properly.
I've used
Dim cryRpt As New CrystalReport1
CrystalReportViewer1.ReportSource = cryRpt
CrystalReportViewer1.Refresh()
and
Dim cryRpt As New ReportDocument
cryRpt.Load(My.Application.Info.DirectoryPath & "CrystalReport1.rpt")
CrystalReportViewer1.ReportSource = cryRpt
CrystalReportViewer1.Refresh()
as the codes...
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Oct 1, 2010
I am just learning vb.net using vs 2008. I have a small forms app which I have conected to a small, single table 2 column database. I enter some numbers into a text box, press a button and the data gets entered into the dbase. However the only data that gets displayed in the data table I have on my form is the existing data.No new data entered is shown until I close down and restart the app. I have tried many times using statements such as [code]...
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Apr 16, 2010
Okay I have everything working as it should but when I first start up the data doesn't show up in the datagridview until I enter another record. It seems to be at the End Sub part of the button click Enter Record.This is what I have at form load event.
[Code]...
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